Textron Aviation Cessna 172S NAV III Skyhawk SP, Information Manual

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CESSNA SECTION 4
MODEL 172S NAV III NORMAL PROCEDURES
KAP 140 AUTOPILOT
U.S.
SPINS
(Continued)
It is recommended that entries be accomplished at high enough altitude
that recoveries are completed 4000 feet or more Above Ground Level
(AGL). At least 1000 feet of altitude loss should be allowed for a 1-turn
spin and recovery, while a 6-turn spin and recovery may require
somewhat more than twice that amount. For example, the
recommended entry altitude for a 6-turn spin would be 6000 feet AGL.
In any case, entries should be planned so that recoveries are
completed well above the minimum 1500 feet AGL required by 14 CFR
91.303. Another reason for using high altitudes for practicing spins is
that a greater field of view is provided which will assist in maintaining
pilot orientation.
The normal entry is made from a power off stall. As the stall is
approached, the elevator control should be smoothly pulled to the full
aft position. Just prior to reaching the stall "break", rudder control in the
desired direction of the spin rotation should be applied so that full
rudder deflection is reached almost simultaneously with reaching full aft
elevator. A slightly greater rate of deceleration than for normal stall
entries, application of ailerons in the direction of the desired spin, and
the use of power at the entry will assure more consistent and positive
entries to the spin. As the airplane begins to spin, reduce the power to
idle and return the ailerons to neutral. Both elevator and rudder controls
should be held full with the spin until the spin recovery is initiated. An
inadvertent relaxation of either of these controls could result in the
development of a nose down spiral.
For the purpose of training in spins and spin recoveries, a 1 or 2 turn
spin is adequate and should be used. Up to 2 turns, the spin will
progress to a fairly rapid rate of rotation and a steep attitude.
Application of recovery controls will produce prompt recoveries (within
1/4 turn). During extended spins of two to three turns or more, the spin
will tend to change into a spiral, particularly to the right. This will be
accompanied by an increase in airspeed and gravity loads on the
airplane. If this occurs, recovery should be accomplished promptly but
smoothly by leveling the wings and recovering from the resulting dive.
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172SPHAUS-05 4-41
For
Training
Purposes
Only